Sulky-harrow



(No Model.) "J. P. HOFFMAN.

SULKY HARROW.

No. 352,244. Patented Nov. 9, 1886.

N PETERS. Flwlo-Lnnngnphur. Wishinglbn. D.C.

. UNITED STATES PATENT OFFICE.

JACOB P. HOFFMAN, OF PITTSBURG, KANSAS.

SULKY-HARROW.

SPECIFICATION forming part of Letters Patent No. 352,244, dated November 9, 1886.

- Applicati filed April 22, rest.

I To all whom it may concern:

Be it known that I, J noon P. HOFFMAN, a citizen of the United States, residing at Pittsburg, in the county of Crawford and State of Kansas, haveinvented certain new and useful Improvements in Sulky-Harrows; and Ido declare the following to be a full, clear, and exact description of the invention, such' as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

1' 5 This inventionhas relation to improvements in sulky-harrowmand it consists in the constructiomnovel arrangement, and adaptation of devices, as will be hereinafter more fully set forth and claimed.

In the accompanying drawings, Figure 1 is a perspective view of a harrow constructed according to my invention. Fig. 2 is a view of harrow and attachments removed from the main frame.

Referring by letter to the said drawings, A indicates the main frame, which is rigidly secured to the axle B, and is designed to support the respectiveharrows and their connecting and operating devices.

0 indicates the drivers seat, which is fixed on the upper side 'ofthe axle and at a point to bring the driver within convenient reach of the various hand-levers to raise and lower the harrows. 1

The main frame is composed of longitudinal and transverse beams, to suitably brace and support other shorter beams, a, to which are secured the segmental racks D, the same being in a vertical plane. To the short beams a, and at a suitable point between the branches of the segmental racks, are pivoted the lower ends of ordinary spring-locking hand-levers, the said levers having the pivoted thumbpieces b for disengaging the spring-pressed bolts from the notches of the said racks. These levers are arranged two for each section of harrow, there being in the present instance three barrow-sections illustrated, and the said levers arranged, respectively, one for front 50 and one for rear.

From the center of the main frame and in juxtaposition with the draft-pole is firmly Serial No. 199,842. (No model.)

secured a beam, E, which is designed to support I a metallic guide -loop, F, through which plays a vertical bar, G, having a stop- 5 5 pin, a, ;as shown, to prevent the same from entirely leaving the said loop. The lower portion of this bar G is provided with a clevis for the attachment of the draft, and is also loosely connected by wires 01 d with a forward trans- 6Q verse beam, H, the rear side of which is also independently swiveled or hooked to the harrow-sections I I I. This vertical bar G is also pivotally connected at a point above its connection with the beam H by means of wirese e, the inner ends of which are secured to eyebolts in the under side of the axle and away from the center of the same. The outer harrow-section, l,is suspended by means of chains,

as shown, from the angular endsg ofshort rods 0 L, which are journaled horizontally in the main frame, with their inner ends secured to and adapted to be rotated by the hand-levers.

It will be seen that by means of these levers the said harrow-sect-ions may be raised either 7 in front or rear and inclined longitudinally, as desired. The longitudinal sections I I of the barrows are suspended by chains from the pivoted hand-levers and guided by suitable pulleys journaled in the main frame.

By means of the pivoted hand-levers, which are brought within convenient reach of the driver by the angular rods 9, it will be seen that the harrows may be one or all adjusted to the desired depth, and by the employment of the vertically-moving bar G in such a construction the draft may be simultaneously and uniformly adjusted, the beam or bar G always accommodating itself to the movements of the narrow-sections. When the harrows have 0 all been raised to throw them out of operation and transport the same, the vertieallbar G will move up in the guideloop so as to transmit the draft more upon thewires which connect the said bar with the axle than those that 9 5 connect the bar with the movable harrows.

I am aware that Letters Patent No. 239,699 show a single centrally-jointed harrow-frame suspended by chains from hand-levers sustained upon the main draft-frame, also averti- 1o) oally-moving standard through the draft-pole, connected by rigid stay-rods to the innerends of the axle bearings for the transportingwheels; also a draft-bar secured to the said stay rods and standard and connected by chains to the harrow, the rear parts of which are also connected by chains to the said axlebearings, all of which I disclaim.

I am also aware that Letters Patent No. 160,929 show angular rods and chains con nect ing barrow-sections,which devices, separately considered, I disclaim.

Having described this invention, what I claim is 1. In a harrow of the character described, the combination of the main transporting frame having a draft-tongue rigidly secured to it, a longitudinal beam, E, alongside of the said tongue, the guide-loop F, sustained, as described,and receiving freely through it a vertical bar, G, provided with a stop-pin and a draftclevis, the cross-bar H, arranged considerably in rear of this bar G and free to rise and fall and to move endwise, and connected by links d d to the lower end of the bar G in close relation to the draft-clevis,harrow-sections linked to said bar H and suspended by chains from lifting devices on the main trame, as described, and the links 6 0, connecting the bar G to the long axle-bar of the main frame, all constructed and adapted to operate substantially in the manner and for the purposes described.

2. The combination, with the transporting frame and a series of independent barrows linked to a transverse bar, H,and also flexibly suspended from raising and lowering levers on the main frame, of a vertically-movable bar, G, arranged considerably in front of bar H, guided by aloop on one side of the draft-tongue and movable independently of the bar H, to which it is connected by link-braces, and the stay-links e e,connecting the bar G to the axlebar, substantially as described.

3. -The combination, with the transportingframe, the suspended harrows, their raising and lowering devices, and the draw-bar H, to which they are linked, as described, of a vertically-movable bar, G, connected by links to the said draw-bar, and a guide-loop, F, secured to the draft-frame on one side of the drafttongue, the said bar H being free to move laterally and vertically independent of the movements of the bar G, substantially as described.

4. In a sulky-harrow, the combination of a M series of independent harrows linked to a drawbar, H, and independently vertically adjustable by means described, a vertically selladj nsting bar, G, connected by long links to said draw-bar, and also to the axle of the transporting-wheels, the guide-loop F, secured to the main frame and supported upon a beam. E, located on one side of the draft-pole, said loop receiving vertically through it the selfadjustable bar G, having the draft-clevis attached to it, all constructed and adapted to op eratc substantially in the manner and for the purposes described.

In testimony whereof I affix my signature in presence of two witnesses.

JACOB I. HOFFMAN.

Witnesses:

C. 1?. F0121), THOMAS MONTANAY. 

